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https://issues.apache.org/jira/browse/HBASE-4087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13066087#comment-13066087
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M. C. Srivas commented on HBASE-4087:
-------------------------------------
+1 for the stuff about clearing the stale connection inside the
HConnectionManager. Whether we should retry only once, or in a loop until we
get a good connection ... I will defer to Stack.
> HBaseAdmin should perform validation of connection it holds
> -----------------------------------------------------------
>
> Key: HBASE-4087
> URL: https://issues.apache.org/jira/browse/HBASE-4087
> Project: HBase
> Issue Type: Bug
> Reporter: Ted Yu
> Assignee: Ted Yu
> Priority: Critical
> Fix For: 0.92.0
>
> Attachments: 4087-v2.txt, 4087-v3.txt, 4087.txt
>
>
> Through HBASE-3777, HConnectionManager reuses the connection to HBase servers.
> One challenge, discovered in troubleshooting HBASE-4052, is how we invalidate
> connection(s) to server which gets restarted.
> There're at least two ways.
> 1. HConnectionManager utilizes background thread(s) to periodically perform
> validation of connections in HBASE_INSTANCES and remove stale connection(s).
> 2. Allow HBaseClient (including HBaseAdmin) to provide feedback to
> HConnectionManager.
> The solution can be a combination of both of the above.
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